Complexations of tweezer molecule (2s, 8s)-bis(2-naphthoyl aminomethyl)-1,5,9-triazabicyclo[4,4,0]dec- 5-ene with organic anions

Abstract

1H NMR studies have been made on the effects of complexation of tweezer molecule (2s, 8s)-bis(2-naphthoyl aminomethyl)-1,5,9-triazabicyclo[4,4,0] dec-5-ene chloride with the salts of p-nitrobenzoate, p-methoxybenzoate and (L)-N-acetyltryptophan. The stability constants of these complexes nave been determined in CDCl3. The results show that the tweezer molecule and aromatic carboxylates are self-associated by hydrogen bonding, electrostatic interaction and aromatic π-π stacking interaction, forming sandwich supramolecular complexes.